Control valve



Feb. 8; 1949.

J. H. WILSON CONTROL VALVE Filed July 12, 1945 INVENTOR. 'Jaizlz Wilson,

" ATTORNEYS Patented Feb. 8, 1949 NT EFFICE CONTROL VA VE John HarrisonWilson, Bay Shore, N. Y.

Application July-12, 1945, Serial No. 604,702

My present invention, in its broad aspect, has to do with improvementsincontrol valves for use with means for circulating cold salt water aboutthe cooling medium of a boat power plant when the boat is not in motion,after the manner pointed out in mycompanion application hereinafterreferred to, to the end that the cooling medium of the motor will besubjected to a supply of cold water through expansion and the qualitywater has of rising and circulating when it is heated, while during themovement of the boat forward or backward, flow of cold salt water ismaintained by scoops and a syphonin efiect. In construction, my controlvalve is a valve body having an upper and a lower seat, the closure ofthe lower seat being controlled by two opposed and cooperating flapvalves which normally hang down to open or uncover the lower seat whennot influenced by circulation of cold salt water against the valves, butone of which is seated to close the valve when cold salt water iscirculated or caused to flow in one direction, while the other is seatedto close the valve when cold salt water is circulatod or caused to flowin the opposite direction. The other and upper valve seat is closed by aball check valve which is normally seated to close the va ve unlessmoved from its seat by cold salt water flowing through the valve in onedirection only when both flap valves are open.

My valves may therefore be said to have threeway action to permit onlycirculation of water through expansion or circulation and flow caused byheating rather than by direct positively induced circulation, and it issimple in construction, sturdy, practical and efficient and is automaticin operation, and has no fragile or intricate parts likely to becomebroken or deranged.

Other and equaly important objects and advantages of my invention willbe apparent from the following description and drawings, and it ispointed out that changes in form, size, shape, materials, andconstruction and arrangement of parts is permissible and within thepurview of my broad inventive concept, and the scope of the appendedclaims.

In the drawings wherein I have illustrated a preferred form of myinvention:

Figure 1 is a vertical section showing a flap valve and the ball valveseated and water flowing in one direction;

Figure 2 is a vertical section showing the other flap valve and the ballvalve seated and the water flowing in the opposite direction;

Figure 3 is a vertical section showing both flap valves unseated and theball valve unseated to 3 Claims. (01. 277 71),

open the valve when the water is rising straight up due to expansion andthe capacity of water to rise and circulate when heated;

Figure 4 is a section on the line l4 of Figure 3;

Figure 5 is a section on the line 5-5 of Figure 8, and

Figure 6 is a detail of the flap valves.

In the drawings wherein like characters of reference are used todesignate like or similar parts throughout the several views:

The numeral l designates a fragmentary part 7 of the dome of a cold saltwater tank to be used as a medium for cooling the cooling fluid of apower plant of a boat, and which cold salt water is caused to circulatethrough the tank through scoops and a syphoning effect and other meansshown in detail and described in my companion application for Heatexchange, filed Aug. 8, 1945, Ser. No. 609,579. At the top of the domeis an opening 2 surrounded by an annular boss 3 on which is seated andattached by bolts 4 the an nular flange 5 of my valve 6. The valve bodyi extends flush with the inside of the tank and is enlarged as at 8below the flange 5 to fit the opening 2. A pair of rectangularflapvalves e and [U are hinged as at l l on the enlargement 8 at directlyopposite sides of the valve so that when rush of fluid in the dome inone direction, as shown in Figure 1, opens or unseats the flap valve 9,and the pressure of fluid seats or closes the other flap valve Ill,while rush of fluid in the dome in the opposite direction, as shown inFigure 2, opens or unseats the flap valve IE] and closes or seats theflap valve 9, thereby preventing entrance of fluid into the valve body Iin either direction of flow. However, since the flap valves 9 and Ithang down by their own weight, they both automatically unseat or openwhen there is no flow or rush of water in either directiorn'as shown inFigure 3. At the upper end of the body 1 is another valve seat Ha onwhich is seated the ball check valve it which has a cage l3 formed ofcrossed wire and located in the valve head l4. When both valves 9 andii! are unseated, rise of fluid in the, body I due to expansion or thelike, unseats the ball check valve and any tendency of the'fiuid toreturn is prevented by re-seating of the ball. The valve head isinternally and annularly flanged as at 15 at the top and has bolted asat It thereto the outlet conduit i1. My control valve has formedspecific application for use in controlling circulation of water bymeans described in my companion patent application, but it has manyother uses and applications not enumerated and is of general use andapplication.

As previously emphasized, interpretation of the scope of my inventionshould only be conclusive when made in the light of the subjoinedclaims.

I claim:

1. A control valve for use with fluids flowing selectively in differentdirections, comprising a valve body having upper and lower seats, a pair3. The invention as defined in claim 1 wherein the flap valves arediametrically opposed, and are of opposed flap valves arranged toselectively 10 seat on the lower seat and close the body by fluidflowing in one of two opposite directions, said flap valves hinged tohang down by their weight 2. The invention as defined in claim 1 whereinthe valve body has an annular attaching flange and an enlarged partbelow the flange to which the flap valves are hinged.

rectangular in formation, and wherein the head has an internal annularflange to which is attached the flanged portion of the fluid outletconduit.

JOHN HARRISON WILSON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 588,736 Eppich Jan. 1, 1897832,388 Kellogg Oct. 2, 1906 1,421,135 Alton Jan. 27, 1922 1,953,007Farmer Mar. 27, 1934

